跟读练习: RE3 Unit 7A - 通过视频学习英语口语

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Track 13, Reading 7a Powering the Planet Despite modern society's heavy dependence on fossil fuels for energy,
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most people are aware that the supply of these fuels is finite.
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As oil and other fossil fuels become more costly and difficult to find, researchers are looking at alternative energy sources,
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including solar, wind, and even nuclear power.
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But which substitute, if any, is the right one?
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Solar.
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Solar panels catch energy directly from the sun and convert it into electricity.
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One of the world's largest solar power stations is in the Indian state of Tamil Nadu,
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where more than 2 .5 million solar panels have the capacity to generate enough power for 750 ,000 people.
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But unlike the burning of fossil fuels, the process used to create all that solar energy produces no emissions.
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Today, however, solar power provides less than 2 % of the world's energy,
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primarily because the cost of the panels is still very high.
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But price is only one issue.
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Clouds and darkness also cause solar panels to produce less energy.
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This requires that additional power sources, such as batteries, be available.
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Some scientists think the solution to this problem can be found in space, which is the ideal place to gather energy from the sun.
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With no clouds and no night time, a space -based solar power station could operate constantly.
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These stations would send the power back to Earth, which could then be turned into electricity for consumption.
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Advocates of solar space stations say this technology would initially require a lot of money, but eventually, it could provide continuous,
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clean energy that would be cheaper than other fuels.
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Also, unlike other energy sources, solar power from space would last as long as the sun shines,
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and would guarantee everyone on Earth all the energy they need.
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Wind Wind, the fastest -growing alternative energy source, is another way of collecting energy from the sun.
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Wind is caused by the sun's heat rather than its light.
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Therefore, unlike solar power, wind power works well even on cloudy days.
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All over the world, incentives designed to decrease the dependence on oil and coal have led to a steep increase in wind -powered energy.
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Today, Asia leads the world in wind power, producing around 230 ,000 megawatts,
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the equivalent of 230 large coal -powered plants.
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Europe produces nearly 180 ,000 megawatts.
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North America remains a distant third at 105 ,000.
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Despite its successes, some people are protesting wind power development, saying the turbines are both noisy and ugly.
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Just outside England's Lake District, a protected national park, a dozen existing wind towers are due to be removed.
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This is a high -quality landscape, says one local homeowner.
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They shouldn't be putting those things in here.
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There are other challenges, too.
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If the wind doesn't blow, the turbines are not able to produce adequate energy.
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As a result, other power sources are needed.
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In contrast, a strong wind can create too much power.
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In cases like this, the energy company must sell the extra power at a much reduced rate, which is not good for business.
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What's needed for both wind and solar is a way to store a large energy surplus.
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However, most systems are still decades away from making this a reality.
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On the plus side, both wind and solar power enable people to generate their own energy where they live.
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People can have their own windmills or solar panels with batteries for calm days.
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Nuclear In the 1970s, nuclear power was seen as the main energy alternative.
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Nuclear power produces vast amounts of electricity more cheaply than gas or coal with no carbon emissions.
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For a number of years in the 1980s and 90s, however, use of nuclear power declined due to accidents,
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concerns about nuclear waste storage and disposal, and high construction costs.
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Today, times are changing.
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Worldwide, about 450 plants generate 11 % of the planet's electric power,
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and some countries have invested heavily in nuclear energy.
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France, for instance, gets three -quarters of its electricity from nuclear power, the highest percentage of any country.
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China has started to build one or two new plants a year, and India has also begun to utilize nuclear energy on a
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large scale however there are still concerns about the safety of
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nuclear power as seen for example at the fukushima nuclear power
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plant in japan the country had to close the nuclear reactors at fukushima
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when the plant was hit by a tsunami
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and as a consequence began releasing substantial amounts of radioactive materials many still believe however
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that nuclear power is one of the future's greenest energy alternatives.
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In the end, are any of these sources alone the answer to our current energy problems?
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The short answer is no, but used in some combination, along with other power sources,
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we may find ways to reduce and eventually eliminate our dependence on fossil fuels.
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本节课学习要点

通过本节课，你将练习听懂关于替代能源的说明性内容，理解太阳能、风能和核能的工作原理、优势及挑战。同时，你还能学习如何用英语清晰表达复杂的科技概念，为影子跟读（shadowspeaks）训练打下基础。

核心词汇与短语

  • finite：有限的（如“fossil fuels are finite”，化石燃料是有限的）
  • emissions：排放物（如“no emissions”，零排放）
  • incentives：激励措施（如“government incentives”，政府激励）
  • turbines：涡轮机（风力发电的核心设备）
  • nuclear waste：核废料（核能的主要挑战之一）

影子跟读练习技巧

视频语速适中，适合进行影子跟读（shadow speak）训练。建议先逐句播放，模仿发音和语调，尤其注意数字和专业术语的读法（如“2.5 million solar panels”）。遇到长句时，可拆分结构，关注意群停顿。练习时可使用影子跟读网站（shadowing site），重复播放难点段落。通过持续训练，不仅能提高英语发音，还能增强听力理解能力。尝试边听边思考能源话题的逻辑，让跟读更有意义。

视频中的语法

说话人最常用的结构，并附上视频中的原话：

结构视频中的用法
被动语态 be + 过去分词 — 强调发生了什么，而不是谁做的can be found · be turned · is caused
现在完成时 have/has + 过去分词 — 过去发生但与现在仍有关联的事have led · have invested · has started
定语从句 who / which + 从句 — 补充说明人或事物space, which is · rate, which is

什么是跟读法？

跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。

影子跟读法: 阅读完整分步指南 →